This paper proposes an application of a hierarchical automatic voltage regulation scheme for wind power plants connected to HV networks. The proposed control schemes is based on a given topology of wind power plants. In particular, we assume that wind generators are connected to each other and have a unique point of contact at the HV level. The secondary voltage control scheme proposed in the paper is based on well-assessed control strategies that are used in HV transmission systems, but has not been applied so far to medium voltage networks. A case study based on a wind power plant composed of 14 wind turbines and a distribution grid is presented and discussed in details
Distributed Generation (DG) operating in a distribution network influences active power losses. In this paper power losses have been estimated for an actual low voltage distribution network and compared for different situations according to the DG penetration and placement of the power units. A practical method to place new DGs is presented. The basic idea is to minimize power losses, while complying voltage network limits, calculated with power flows using historical data over a discrete number of possible points of connection
The paper proposes an application of a hierarchical automatic voltage regulation scheme for a cluster of hydro power plants connected to HV networks. The topology considered in the paper is a radial network in which the hydro power plants are connected to each other and have a single point of connection at the HV level. The technique proposed in the paper is based on well-assessed control strategies that are used in HV transmission systems, but has not been applied so far to medium voltage networks. A case study based on a cluster of hydro power plants composed of 11 generators and a distribution grid is presented and discussed in detail
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